Jan 2, 2013 12:00pm PST
exploratorium in san francisco. this is the very last day for fans young and old to geek out at its location near the palace of fine arts. let's go live to cbs 5 reporter anne makovec. she is live outside the museum with the big moving plans and big lines behind you. >> reporter: that's a long line behind me and you can't even see half of it. there's probably 100 people. the line is around the block right now. 2,000 people have been here already and they are expecting 5,000 by the end of the day because the exploratorium is free today. everybody is coming here to celebrate and reminisce. the sounds of wide-eyed wonder are about to fall silent here after 43 years the exploratorium closes its doors at the palace of fine arts. local families lined up for its swan song. >> i'm going to try to live it up and experience it one last time in its original spot. >> reporter: she has been coming here for decades with her children and brought her daughter back today, not knowing it was the end. >> i think that the reason we felt we needed to come was because somehow we knew it was the last day.